PYQ Vault
EbooksTutor

Day 310: JEE Mains Chemistry

5 questions. Try each one first, then open its answer.

  1. Question 1

    Equilibrium. Asked once: 2021 Paper 15 (same type asked 4 times) See all 4 of this type

    31
    [Ba(OH)2]=5×10−3\left\lbrack Ba(OH)_{2} \right\rbrack= 5 \times10^{- 3}, It dissociates completely, Find the conc of H3O+H_{3}O^{+}.

    Tap an option to check your answer.

  2. Question 2

    Biomolecules. Asked once: 2021 Paper 5 (same type asked 4 times) See all 4 of this type

    32
    Which among the following pairs of Vitamins is stored in our body relatively for longer duration?

    Tap an option to check your answer.

  3. Question 3

    Chemical Thermodynamics. Asked once: 26 Jul 2022 (same type asked 4 times) See all 4 of this type

    54
    2.4 g2.4\ g coal is burnt in a bomb calorimeter in excess of oxygen at 298 K298\ K and 1 atm1\ atm pressure. The temperature of the calorimeter rises from 298 K298\ K to 300 K300\ K. The enthalpy change during the combustion of coal is −x kJ mol−1-x\ kJ\ mol^{-1}. The value of xx is _____. (Nearest Integer) (Given: Heat capacity of bomb calorimeter 20.0 kJ K−120.0\ kJ\ K^{-1}. Assume coal to be pure carbon)

  4. Question 4

    Coordination Compounds. Asked once: 2021 Paper 21 (same type asked 4 times) See all 4 of this type

    52
    The number of optical isomers possible for [Cr(C2O4)3]3−\left\lbrack Cr\left( C_{2}O_{4} \right)_{3} \right\rbrack^{3 -} is

  5. Question 5

    Organic Chemistry - Some Basic Principles and Techniques. Asked once: 28 Jul 2022 (same type asked 4 times) See all 4 of this type

    44
    Among the following marked proton of which compound shows lowest pKapK_{a} value?

    Tap an option to check your answer.